IC快速检索：
型号 / 厂家，封装，批号，备注，订购
74HC540D.653 / PHILIPS,,06+,原装010-66001623 订购 PDF文档
74HC540D/7.2M / PHI,,05+,010-66001623/66001621 订购 PDF文档
74HC540D@653 / ,,,原装现货 订购 PDF文档
74HC540D652 / PHILIPS,,07+,全新原装 订购 PDF文档
74HC540D653 / PHL,,07+,全新原装 订购 PDF文档
74HC540D-653 / ,,02+,原装现货 订购 PDF文档
74HC540DB,118 / ,,,原装现货 订购 PDF文档
74HC540FPEL / PAN,SOP8,02+,全新原装，深圳/香港现货 订购 PDF文档